参数资料
| 型号： | LT1935ES5#TRM |
| 厂商： | Linear Technology |
| 文件页数： | 2/8页 |
| 文件大小： | 0K |
| 描述： | IC REG BST FLYBK SEPIC TSOT23-5 |
| 标准包装： | 500 |
| 类型： | 升压（升压），回扫，Sepic |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.27 V ~ 38 V |
| 输入电压： | 2.3 V ~ 16 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-5 |
| 其它名称： | LT1935ES5 LT1935ES5-ND |
LT1935
ABSOLUTE
(Note 1)
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
ORDER PART
V IN Voltage .............................................................. 16V
SW Voltage ................................................ – 0.4V to 40V
FB Voltage ................................................................. 6V
Current Into FB Pin .............................................. ± 1mA
SHDN Voltage ......................................................... 16V
Maximum Junction Temperature ......................... 125 ° C
Operating Ambient Temperature Range
(Note 2) .............................................. – 40 ° C to 85 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
TOP VIEW
SW 1 5 V IN
GND 2
FB 3 4 SHDN
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T JMAX = 125 ° C, θ JA = 113 ° C/ W,
NUMBER
LT1935ES5
S5 PART MARKING
LTRX
Strict adherence to JDEC 020B solder attach and rework
Consult LTC marketing for parts specified with wider operating temperature ranges.
for assemblies containing lead is recommended.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 3V, V SHDN = V IN unless otherwise noted. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Feedback Voltage
Measured at the FB Pin
●
1.240
1.265
1.280
V
Feedback Voltage Line Regulation
2.5V ≤ V IN ≤ 16V
0.01
%/V
FB Pin Bias Current
Undervoltage Lockout Threshold
V FB = V REF
●
12
2.1
60
2.3
nA
V
Maximum Input Voltage
16
V
Switching Frequency
1
1.2
1.4
MHz
Maximum Duty Cycle
Switch Current Limit
(Note 3)
●
85
2
93
3.2
%
A
Switch Saturating Voltage
I SW = 2A
180
280
mV
Switch Leakage Current
SHDN Pin Input Current
V SW = 5V
V SHDN = 1.8V
●
0.01
14
1
40
μ A
μ A
V SHDN = 0V
0.1
μ A
Operating Supply Current
V FB = 1.5V
3
mA
SHDN Supply Current
V SHDN = 0V
0.1
1
μ A
SHDN Input High Voltage
SHDN Input Low Voltage
1.8
0.5
V
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1935ES5 is guaranteed to meet performance specifications
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current limit guaranteed by design and/or correlation to static test.
from 0 ° C to 70 ° C. Specifications over the – 40 ° C to 85 ° C operating
1935f
2
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